US 12,114,217 B2
Data forwarding method and device, master base station and slave base station
Aijuan Liu, Beijing (CN); Dajun Zhang, Beijing (CN); and Jiancheng Sun, Beijing (CN)
Assigned to DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD., Beijing (CN)
Appl. No. 17/290,689
Filed by DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD., Beijing (CN)
PCT Filed Nov. 1, 2019, PCT No. PCT/CN2019/114964
§ 371(c)(1), (2) Date Apr. 30, 2021,
PCT Pub. No. WO2020/088634, PCT Pub. Date May 7, 2020.
Claims priority of application No. 201811303669.2 (CN), filed on Nov. 2, 2018.
Prior Publication US 2022/0022114 A1, Jan. 20, 2022
Int. Cl. H04W 36/08 (2009.01); H04W 36/00 (2009.01)
CPC H04W 36/08 (2013.01) [H04W 36/0016 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A data forwarding method, applied to a first master base station and comprising:
after receiving a handover request message sent by a second master base station, if it is determined that a slave base station node is added, a service data adaptation protocol (SDAP) layer of a part of flows of a preset protocol data unit (PDU) session is configured at a master base station node, and an SDAP layer of the rest part of flows of the preset PDU is configured at the added slave base station node, sending a handover request response message carrying first preset information to a second master base station;
wherein the first preset information comprises: first identity identifications of all flows configured for the first master base station and data forwarding addresses corresponding to the first identity identifications, and second identity identifications of all flows configured for a first slave base station which is added and data forwarding addresses corresponding to the second identity identifications;
each of the data forwarding addresses corresponding to the first identity identifications is a first tunnel address, and the first tunnel address is configured to forward data to the first master base station; and
each of the data forwarding addresses corresponding to the second identity identifications is a second tunnel address, and the second tunnel address is configured to forward data to the first slave base station.